* You might be mistaken about the name. There might be a slight misspelling or you're remembering a different name.
* The actor may be less known. It's possible they are a less famous actor working in a specific niche or region.
* You're thinking of a character. It's possible "Cassie Steel" is the name of a fictional character from a movie, TV show, or book.
To help you find the actor, please provide more information such as:
* What movies or TV shows have you seen them in?
* What kind of roles do they typically play?
* Any other details you remember about them.
With more information, I might be able to help you find the actor you're looking for!